The negative battery cable is disconnected and isolated before electrical work begins. The cargo-floor coverings, rear threshold, headliner trim, and driver-side cargo trim are removed carefully to protect the panels and expose the planned module location.

The upper hinge trim, liftgate glass trim, and main liftgate panel are removed without damaging their retaining tabs. The hatch switch is disconnected safely, and the factory taillight connectors at both liftgate corners are opened.

The yellow-wire branch is connected at the driver-side taillight circuit, and the green-wire branch is routed through the liftgate structure to the passenger-side circuit. Both vehicle-specific connections are seated fully and the harness is secured alongside the factory liftgate wiring.

The harness is guided through the driver-side liftgate weather boot without pinching or abrading the wiring, then routed behind the headliner into the cargo area. The converter is mounted securely, the ground is attached to clean vehicle metal, and protected 12-gauge battery power is routed away from heat, movement, and sharp edges.

The 4-flat is positioned in the rear cargo area for protected storage when not in use, and all loose wiring is secured. Running lights, brake lights, both turn signals, and ground integrity are tested before the battery connection, weather boot, liftgate panels, headliner trim, threshold, and cargo coverings are restored.